Grinding and polishing machine



(No Model.) 2 Sheets-Sheet 1.

A. MANEGKE.

GRINDING AND POLISHING MACHINE. No. 439,300. Patented 0015.28, 1890.

INVENTOR Al -:5;- ANECKE a $.52 MAW (No Model.) 2 Sheets-Sheet 2.

A MANEOKE.

GRINDING AND POLISHING MASHINE.

No. 439,300. I Patented 001;. 28, 1890.

ATTEeT I \NVENTQR zw. mzLw. ALB ERT ANECKE. )7. $6M V 65 L3. 94mm UNITE STATES PATENT OFFICE.

ALBERT MANEGKE, OF GERRO GORDO, ILLINOIS.

GRINDING AND POLISHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 439,300, dated October 28, 1890.

' Application filed May 25, 1889.

To all whom it may concern.-

Be it known that I, ALBERT MANEOKE, of the town of Gerro Gordo, county of Piatt, and State of Illinois, have invented certain new and useful Improvements in Grinding and Polishing Machines, of which the following is a specification.

It is the object of my invention to enable grinding or polishing wheels to be moved in various directions and applied at various angles with relation to stationary surfaces, to

. enable pressure to be yieldingly applied, and

to enable the operator to maintain a comfortable upright position out of close contact with the wheels. I attain my object in the manner hereinafter set forth by means of the details of construction and combination of parts specified and claimed.

In the drawings accompanying and forming a part of this specification, Figure 1 is a plan of my invention. Fig. 2 is a side elevation of the same. Fig. 3 is an enlarged plan of the grinding-frame. Fig. 4: is a side view of the same. Fig. 5 is a side view of a wheelcarrying spring. Fig. 6 is a sectional view of the swivel-joint of the grinding frame on line x in Fig. 4. Fig. 7 is a rear view of the crossbar from which the swinging end of the grinding-frame is counterbalanced. I

The grinding or polishing wheels 0, are mounted on a shaft that is carried in bearings 12 b. Pulley c is mounted on the same shaft and provides means for driving it. The bearings b are carried on the swinging ends of springs d, and have the slotted lugs I), (seen clearly in Fig. 5,) through which pass bolts 6. The springs d are secured to a disk I of the swivel-joint, and this disk also provides points of connection for bars f f. Racks f f are fixed to the swinging ends of bars f. Bars g g are pivotally connected with the racks, and are provided at their opposite terminations with housings g g. Bars h h are connected pivotally with bars g, extend through housings g, and have the handles h h. Lockframe 07. is mounted slidingly on bars g, it engages the teeth of the rack, and it is connected at each end with finger-levers n by lines n". A spring or springs, preferably the flat single spring shown in Fig. 3, tends to hold the lock-frame in constant engagement with the teeth of the rack. The cross-bar it as No. 312,146. (No model.)

has the set of depressions in its lower surface, as shown at k" in Fig. 7, and a sliding link 10', adapted to the depressions, provides means for connecting with a counterpoise, as will hereinafter appear.

The swivel-joint comprises the internallyconcave disks Z and Z, held in opposition by pivot-pin 0. Disk Z is carried by brackets on m, which are pivoted on shaft 15. (Seen only in Fig. 2.) The shaft t is carried in hanger u. Hanger u is connected with hanger s by bar 3', and hanger s, with all its adjuncts, depends pivot-ally from shaft p. Shaft t carries pulleys t and t, the one driven, the other a driver. Shaft 10 carries pulley p in hanger s, elongated pulley p, and loose pulley p'.

The main shaft 0 has the flanged. pulley r, and force is conveyed from it to the polishing-wheels as follows: From pulley 7" through belt q to pulley 19' from pulley 13' through belt q to pulley t, and from pulley t" through belt q" to the pulley c on the shaft of wheels a. The bar 0 is centrally suspended by vertical pin c, which extends above, and is supported pivotally from bearings w, and it has the pulleys ac :r, the one over link It and the other to the rear thereof, and approximately in line with belt q. A line y extends from the link over the pulleys, and connects with weight ,2, which is sufliciently heavy to counterbalance the grinding-frame.

In operation the surface to be ground or polished is suitably secured under the Wheels, the operator grasps the handles h and moves the revolving Wheels in any desired direction-upward, downward, and forward and back by swinging on shafts t and p sidewise by side pressure, which moves shaft 1) longitudinally in its bearings while the belt q slips on the elongated pulley p and obliquely by means of the swivel-joint, which permits a sufficient degree of such motion to meet all practical requirements. Usually the bolts e are loose in slots 1), and pressure is applied to the wheels through springs 61 cl. When de sired, however, the bolts may be tightened, when the wheels will partake of the rigidity of bars f f. The racks f, with the lockframe and connected finger-levers, enable the handles to be adjusted to suit different Work and to accommodate the operator. The bar 0 pivots centrallywhen the wheels are moved laterally, and accommodates such motion withoutmateriallyaifecting thevertical position of the weight 2. The bar 7r, with the depres- SIOIJS k, enables the frame to be balanced on the link when but one wheel is used, and to be adjusted with relation to the counterpoise to meet other requirements.

The shaft 1) is shortened at its upper end to conform to the limits of the paper; but it. W111 be readily understood that it is to project beyond its bearings sufficiently to provide lateral motion in the manner specified, and that itis to be supported intermediately where occasion requires such support. The flanges of pulley r retain belt q in position, and the long pulley slides lengthwise through the belt when in motion with such ease that no perceptibleresistance to the lateral motion of the wheels occurs.

By means of my device the scouring surfaces of plows, &c., may be polished without detachment of parts, sickle-bars may be ground and other uses, so numerous as not to necessitate naming, will readily occur tothose skilled in such matters. In all cases grinding-pressure may be applied with delicacy of touch, variation of direction, and accuracy of guidance, making themachine-peculiarly desirable for the purpose for which it is designed.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A grinding and polishing machine comprising a frame depending pivot-ally from a horizontal shaft, a polishing-frame swnng'on a horizontal pivot at the lower end of the depending frame and having manipulating handles, polishing-wheels mounted yieldingly in the polishing-frame, pulleys on the difierent shafts, and bands connecting the pulleys, as set forth.

2. A grinding and polishing machine comprising a main shaft carrying a flanged pulley, a counter-shaft longitudinally movable in its bearings and having an elongated pulley, a band connecting the flanged pulley with the elongated pulley, and grinding and polishing mechanism depended from and driven by the counter-shaft. as set forth.

3. A grinding and polishing machine comprising a main shaft carrying a flanged pulley, a counter-shaft longitudinally movable in its bearings and having an elongated pulley, a band connecting the flanged pulley with the elongated pulley, a frame dependent from the counter-shaft, a polishing-frame pivotally connected at one, end with the dependent frame, a bar pivoted centrally at a point above and in line with the longitudinal axis of the polishing-frame and carrying pulleys at its ends, a line extending from the swinging end of the polishing-frame over the pulleys of the bar and connecting with a counterbalancingweight, and means for imparting the'motion of the counter-shaft to the wheels of the-polishing-frame, as set forth.

4:. The polishing-frame comprising the brackets m, the swivel-joint H o,- the springs d, carrying the bearings b, the wheels a, mounted on a shaft carried in bearings 12, the bars ff, connected with the swivel-joint, and handles h, formed on extensions of bars f f as set forth.

5. Incombinationwiththepolishing-wheels, the swivel-joint, and the brackets m,-barsf, carrying racks f, and bars g, pivoted onthe racks and having the lock-frame adapted thereto, as set forth.

6. In combination with the polishing frame and counterbalancing line, bar It, having de-.

pressions k", and links 7c, connected with the line and adapted to the depressions, asset forth.

In testimony whereof I sign my name in the presence of two subscribing witnesses. ALBERT MANECKE. Attest:

.I. D. WALKER. J. Q. A. ODOR. 

